<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<input type="text" placeholder="请输入1-100之间的整数">
<input type="button" value="猜一猜" onclick="f()">
<div></div>
<script>
  let i=document.querySelector("input");
  let d=document.querySelector("div");
  //生成一个1-100之间的随机整数
  let x=parseInt(Math.random()*100)+1;
  if(isNaN(i.value)){
    d.innerText="输入错误!"
  }
  let count=0;
  function f(){
    count++;
    if(i.value>x){
      d.innerText="你猜的数大了!"
    }else if(i.value<x){
      d.innerText="你猜的数小了!"
    }else {
      d.innerText="恭喜你第"+count+"次猜中了!"
      x=parseInt(Math.random()*100)+1;
      count=0;
    }
    i.value="";
    console.log(x);
  }
</script>
</body>
</html>